I wrote an updated version of the Expanding Earth Model (EEM)based on the assumption that during the Cambrian Explosion (CE) for about .5 billion years ago, the radius of Earth increased by factor 2.
The recent findings demonstrating that the Earth's mantle contains water and even pockets of fluid water plus a detailed discussion of various objections against EEM lead to an updated version of the model. The new key element is that the value of heff was heff=3h0=h/2 at the atomic level before CE for Earth. Earth consisted of matter which would be dark relative to us. In CE the transition heff=3h0=6h0= h took place and induced scaling by a factor 2. This transition also initiated biological evolution.
The finding that Earth was already billions of years ago covered by water suggests that this water had heff=h so that it could leak almost freely into the interior of Earth and because of its darkness could have much lower temperature and pressure than the heff=h/2 matter around it. Therefore life could evolve in Mother Gaia's womb shielded from cosmic rays and meteoric bombardment.
See the chapter Expanding Earth Model and Pre-Cambrian Evolution of Continents, Climate, and Life or the article Updated version of Expanding Earth model.